The biotic blast catches Bariyan off-guard, even though he hadn't been its target. He nearly breaks focus in order to look over, to see what Shepard's getting up to, but manages to resist the instinct and focus on Wrex -- who, Bariyan swears, is somehow just shrugging off the shots that land. Not that Bariyan's landing most of them.

He's rather grateful when Shepard comes to his aid.

"Regenerating?" Bariyan echoes, in utter disbelief.

And then a tiny click, a sound that registers above everything else. Shit. "Shepard. I need a reload."

Bariyan lowers the pistol, but doesn't duck out of the way just yet. He keeps his eyes on Wrex, careful to keep clear of Shepard's lien of sight. Even if Bariyan can't shoot right now, the least he could do is take a shot.